One of the most famous (and infamous) pop singer-songwriters in the world, [lastfm link_type=”artist_info”]Katy Perry,[/lastfm] or Katheryn Elizabeth Hudson, celebrates her 27th birthday today.

While Perry grew up with relative success as a Christian pop artist in high school, her turn to candy-coated tongue-in cheek lyrics made her the first female artist to get five hits on the Billboard Hot 100 in one year.

In honor of Katy Perry, pop mistress of all things fun and cute, we’ve made a list of the Top 10 Katy Perry Songs For Her 27th Birthday with lyrics to the songs–so you can sing-a-long!